Best Lightweight Mountain Bikes of 2025

Luke Dobson Avatar
Luke Dobson
Last Updated: 8 Feb 2025

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For those who love to hit the trails and explore the great outdoors, lightweight mountain bikes are a must-have. These bikes are designed to be durable and sturdy while also being lightweight enough to easily navigate through rough terrain. With features like suspension systems, disc brakes, and high-quality tyres, these bikes provide a smooth and stable ride on even the toughest of trails. Whether you're a beginner or an experienced mountain biker, investing in a lightweight mountain bike is a wise choice that will enhance your outdoor adventures.

At a Glance: Our Top Picks

FLYing Lightweight 21-Speed Mountain Bike Cover #TOP 1
FLYing Lightweight 21-Speed Mountain Bike
ftb score rating icon 9.8
Cambreeze Unisex Mountain Bike 27.5'' Aluminium Frame Cover #TOP 2
Cambreeze Unisex Mountain Bike 27.5'' Aluminium Frame
ftb score rating icon 9.7
BSTSEL 27.5 Inch Mountain Bike with Disc Brakes Cover #TOP 3
BSTSEL 27.5 Inch Mountain Bike with Disc Brakes
ftb score rating icon 9.5

Top 10 Lightweight Mountain Bikes

FLYing Lightweight 21-Speed Mountain Bike

Flying
Gndie/Ca743
Black
26 Inches Wheel
FLYing Lightweight 21-Speed Mountain Bike Cover
FLYing Lightweight 21 speeds Mountain Bikes Bicycles Strong Alloy Frame with Disc brake and Shimano parts Warranty

The FLYing Mountain Bike features a strong and lightweight aluminium alloy frame, making it easy to handle while providing durability during your rides. With 21-speed gears and Shimano components, you can effortlessly shift gears to tackle various terrains. The alloy disc brakes ensure reliable stopping power for your safety, while the double-wall wider rims and puncture-protected tyres enhance your riding experience by offering stability and reducing the risk of flats. This bike is designed for comfortable rides on different trails.

What We Like
Lightweight aluminium alloy frame
21-speed Shimano gears
Reliable alloy disc brakes
Puncture-protected tyres
Easy to handle on trails

Cambreeze Unisex Mountain Bike 27.5'' Aluminium Frame

Totem
Black 2
27.5
Cambreeze Unisex Mountain Bike 27.5'' Aluminium Frame Cover
Cambreeze Unisex's Mountain Bike/Bicycles 27.5'' Wheel Lightweight Aluminium Frame 21 Speeds Shimano Disc Brake, Black 2

The Cambreeze Mountain Bike features a large 27.5'' wheel, providing excellent stability and control on various terrains. Its lightweight aluminium frame makes it easy to handle, while the 21-speed gears allow you to tackle different inclines with ease. The Shimano disc brakes ensure reliable stopping power, enhancing your safety during rides. Additionally, the bike includes a double wall alloy rim and puncture-protected tyres, giving you peace of mind on long journeys or rugged paths.

What We Like
Lightweight aluminium frame
Reliable Shimano disc brakes
21-speed gear system
Puncture protection tyres
Easy wheel installation

BSTSEL 27.5 Inch Mountain Bike with Disc Brakes

BSTSEL
Aluminum
Black & Blue
27.5 inch
BSTSEL 27.5 Inch Mountain Bike with Disc Brakes Cover
BSTSEL 27.5 Inch Mountain Bike 3 Spoke Wheels Bicycle 17.5 Inch Aluminum Frame Mountain Bicycle Shimano 21 Speeds with Dual Disc-Brake Suitable For Men And Women Over The Age Of 16 (Black & Blue)

The BSTSEL Mountain Bike features a professional Shimano 21-speed drivetrain, providing you with precise control over various terrains, ideal for climbing and descending. Its dual suspension system absorbs shocks, enhancing your comfort during rides on rugged paths. The lightweight aluminium frame allows for easy manoeuvrability, making it suitable for all riders. Additionally, the high-quality steel disc brake system ensures quick and safe stops, giving you confidence on every ride.

What We Like
Lightweight aluminium frame
21-speed Shimano drivetrain
Dual suspension for comfort
High-quality disc brakes

Cambreeze Mountain Bike with 21 Speeds

Totem
aluminium frame 21 shimano speed disc br
White
27.5
Cambreeze Mountain Bike with 21 Speeds Cover
UK Stock New Cambreeze Mountain Bike/Bicycles Black 27.5'' wheel Lightweight Aluminium Frame 21 Speeds SHIMANO Disc Brake…

The Cambreeze Mountain Bike features a lightweight aluminium frame that is both strong and easy to handle, making it perfect for riders between 1.60m and 1.88m in height. Its 21-speed gears, equipped with Shimano controls, allow you to effortlessly shift through a range of speeds, enhancing your riding experience. The bike is fitted with front and rear disc brakes for reliable stopping power, providing you with peace of mind on various terrains. Additionally, the double-wall alloy rims and puncture-resistant tyres ensure durability and stability during your rides.

What We Like
Lightweight aluminium frame
21-speed gear system
Reliable disc brakes
Puncture-resistant tyres
#TOP 5

26 Inch PansyWind Mountain Bike with 21 Gears

PansyWind
Black
26Zoll
26 Inch PansyWind Mountain Bike with 21 Gears Cover
26 Inch Mountain Bike Bicycle with 21 Speed and Disc Brake MTB Bike Unisex Lightweight Foldable Bike with Non-slip Handlebars Suitable for City and Camping

The PansyWind Mountain Bike offers a comfortable ride on various terrains, thanks to its lockable front forks and rear shock absorber. This combination enhances damping, making your journey more enjoyable. With 21 adjustable gears, you can easily switch between inclines and flat roads, ensuring a smooth ride regardless of the landscape. The height-adjustable seat caters to your personal comfort, accommodating adults between 5.41 and 6.4 ft tall. Additionally, its foldable design makes storage easy, fitting snugly in your garage or hallway.

What We Like
Comfortable ride on rough terrain
21 adjustable gears for versatility
Height adjustable for user comfort
Easy to store and transport
Durable high-carbon steel frame

BSTSEL 27.5 Inch Folding Mountain Bike

BSTSEL
‎BSTSEL
Black & Red
26 27.5Inch
BSTSEL 27.5 Inch Folding Mountain Bike Cover
BSTSEL 27.5Inch Adult Folding Mountain Bike,Dual Suspension Mountain Bikes with 27.5 Inches 3-Spoke Wheel, Shimano 21 Speed Mens and Womens Foldable Mountain Bicycle (27.5 Inch Black & Red)

The BSTSEL Folding Mountain Bike is designed with the rider in mind. Its aluminium alloy frame is lightweight yet sturdy, making it ideal for individuals between 5'4” and 6' tall. With a professional Shimano 21-speed drive train, you can effortlessly tackle climbs and enjoy smooth descents. The dual suspension system enhances comfort by absorbing shocks, allowing you to ride on various terrains. Additionally, the 3-spoke foldable design means you can store and transport the bike with ease, making it perfect for daily commuting or outdoor adventures.

What We Like
Lightweight aluminium alloy frame
21-speed Shimano drive train
Comfortable dual suspension
Convenient foldable design
High load capacity

Falcon Vienne Women's Mountain Bike Black/Teal

Falcon
F2614054-1
Black/Teal
12 Years
Falcon Vienne Women's Mountain Bike Black/Teal Cover
Falcon Vienne Womens' Mountain Bike Black/Teal, 17" inch steel frame, 18-speed Shimano rear derailleur and micro-shift rotational shifters strong and lightweight deep-section alloy wheel rims

The Falcon Vienne Mountain Bike is designed specifically for women, featuring a strong yet lightweight 17-inch steel frame that provides durability without compromising ease of handling. With 18-speed gearing and a Shimano rear derailleur, you can conquer various terrains with confidence. The bike is equipped with deep-section alloy wheel rims and reliable front and rear steel V-brakes, ensuring excellent stopping power. Additionally, the comfy, well-padded Falcon saddle allows for height adjustment, helping you find the perfect riding position for a more enjoyable experience.

What We Like
Lightweight frame for easy handling
18-speed gearing for versatile terrain
Reliable brakes for safe rides
Adjustable saddle for comfort
Soft grips for better control
#TOP 8

LSLIFE 29 Inch Mountain Bike, 21-Speed Mountain Bicycle for Adult Shimano Drivetrain Mens Women Mountain Bike Dual Disc Brakes Lightweight Bicycle

LSLIFE
29 Inch Mountain Bike
Grey+Rear Carrier
29 Inch
LSLIFE 29 Inch Mountain Bike, 21-Speed Mountain Bicycle for Adult Shimano Drivetrain Mens Women Mountain Bike Dual Disc Brakes Lightweight Bicycle Cover
LSLIFE 29 Inch Mountain Bike, 21-Speed Mountain Bicycle for Adult Shimano Drivetrain Mens Women Mountain Bike Dual Disc Brakes Lightweight Bicycle with Shock Absorber (Grey+Rear Carrier)

Features
Shock-Absorbing Bike: When You Encounter Bumpy Roads, The Mountain Bike's Shock Fork Will Enhance Its Shock Absorption Ability, Making Your Ride More Comfortable. Mountain Bike Tires Are Also Non-Slip, Making It Easier To Travel On Difficult Roads Than Other Tires. For Example, Driving On Mountain Roads, Sandy Roads, Snow Roads, And Muddy Roads Will Increase The Safety And Comfort Of Riding
High Quality Material: The Frame Of The Mountain Bike Is Made Of High Quality Aluminium Alloy, Which Is Not Only Durable But Also Lightweight. You Can Use Our Mountain Bikes In A Variety Of Environments, Even Difficult Paths Are Easy To Pass! This Bike Allows You To Travel Faster And Easier In A Variety Of Environments, Including Uphill, Even With A Weight Of Up To 150kg. High-Quality Rubber Tires And Aluminum Alloy Hubs Are More Lightweight And Wear-Resistant, Providing Good Long-Term Performance.
Easy Assembly: Our 29" Mountain Bikes Are 90% Pre-Assembled, All You Need To Do Is Assemble The Front Wheel, Pedals, Handlebars, Seat And Tyres Onto The Bike Once You Receive The Product, Assembly Is Quick And Easy!
Comfortable Riding Experience: Adjustable Handlebar And Seat Height, So You Can Adjust The Handlebar And Seat Height According To Your Needs. Meanwhile, The Height-Adjustable Design Of The Bike Increases The Range Of Use Of The Bike, Making It Suitable For Adults And Children In The Family To Ride. The Mountain Bike Seat Is Soft And Comfortable, Fitting Your Hips And Giving You A Good Riding Experience.
21-Speed Adjustable: Our Bikes Feature A Professional Shimano 21-Speed Drivetrain For Precise And Effortless Control Of Riding Speed, So You Can Easily Change The Speed You Need For Your Ride. The Speed Controller And Front And Rear Speed Control Flywheels On The Mountain Bike Handlebars Can Easily Adjust The Speed According To Different Terrains Such As Slopes, Flat Roads And Bumpy Roads, Making Your Ride More Focused And Less Effort.

LSLIFE 27.5 Inch Mountain Bike with Shimano Drivetrain

LSLIFE
27.5 Inch Mountain Bike
Black & Blue
One Size
LSLIFE 27.5 Inch Mountain Bike with Shimano Drivetrain Cover
LSLIFE 27.5 Inch Mountain Bike, 21-Speed Mountain Bicycle Shimano Drivetrain Mens Boys Bike Disc Brakes 3 Spoke Wheels with Shock Absorber (Black & Blue)

The LSLIFE Mountain Bike is designed for a comfortable and versatile riding experience. Its high-quality aluminium alloy frame is both lightweight and durable, allowing you to tackle various terrains with ease. The shock-absorbing fork enhances comfort on bumpy roads, ensuring a smoother ride. With a professional Shimano 21-speed drivetrain, you can effortlessly adjust your speed for different environments, making your journey more enjoyable. Additionally, the adjustable handlebar and seat height cater to riders of all sizes, providing a personalised fit for everyone in the family.

What We Like
Durable aluminium alloy frame
Comfortable shock absorption
21-speed Shimano drivetrain
Adjustable handlebar and seat
Non-slip mountain bike tires

20" Mountain Green Bike for Kids

L-LX
Green
20inch
20" Mountain Green Bike for Kids Cover
20" Wheel Mountain Green Bike, Children's Bicycle Rigid Frame, Carbon Steel, Safety Brake, Adjustable Height Lightweight for Boys and Girls

The Gorgivous Kids Bike is designed with a high-accuracy flywheel, ensuring stable turns and preventing chain drops, which enhances your riding experience. Its high-quality carbon steel frame offers exceptional durability and stability, supporting a maximum load of 85kg, making it suitable for many riders. The vibrant green colour adds a fashionable touch, ensuring you stand out while cycling. Additionally, mudguards are included to keep you dry during rainy rides, allowing you to enjoy cycling regardless of the weather.

What We Like
Durable carbon steel frame
Stable and accurate shifting
Attractive bright green colour
Suitable for various riders
Mudguards for rainy conditions
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is the lightest aluminum mountain bike?

The XtC SLR 29 marks the first time Giant has used its ultra-premium ALUXX SLR grade aluminum for a hardtail 29er. It's also the lightest aluminum hardtail ever built by Giant at 1,429 grams (size small).

2. What is a decent weight for a mountain bike?

So what's a good weight for a Mountain Bike? Generally, you want to shoot for a Mountain Bike between 24 and 28 pounds. This weight allows you to get all the stability from a Mountain Bike without being too heavy to maneuver.

Editor's Notes

During our lightweight mountain bike research, we found 37 lightweight mountain bike products and shortlisted 10 quality products. We collected and analyzed 4,504 customer reviews through our big data system to write the lightweight mountain bikes list. We found that most customers choose lightweight mountain bikes with an average price of £239.27.

The lightweight mountain bikes are available for purchase. We have researched hundreds of brands and picked the top brands of lightweight mountain bikes, including Flying, Totem, BSTSEL, PansyWind, Falcon.

Written by
Luke Dobson Avatar

Luke is a runner, a climber, hiker, hunter, and a lot more. Luke Dobson is Celtic-born and has lived most of his life in Scotland. However, his sporting endeavours have taken him to several countries around Europe. He serves as a tour guide for countless companies and owns a couple of gyms and recreational centres in Scotland. Luke Dobson is proficient in 7 different languages. He maintains many sport article columns where he shares his wealth of experience in the sport industry.